So I'm looking to add another cab to my rig and a SWR BigFoot pops up on ebay. bigfoot Ideally, I need an SWR or Eden cab since most other cabs are not as deep as their 18.5 inches. Plus either maker's tone will be closest to the Eden Metro combo I have now which I plan on stacking on top. My concern is that my 8 ohm 210XLT is rated at 103 db spl and the 4 ohm Bigfoot is rated to 95 db spl. I figure that the 4 ohm cab will take 375 of the Metros 600 watts and the 210 will flow the balance or 225 watts. And since it takes double the power to increase spl by 3 db, the 4 ohm Bigfoot cab will only slightly be better balanced. There still would be at least a 6 db difference. Any of you think these cabs will be more equally balanced live than I am trying to explain scientifically?